diff --git a/Makefile b/Makefile
index 7ad8b78..5702164 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,5 @@
 PREFIX = /usr/local
+MANDIR = $(PREFIX)/share/man

 CDEBUGFLAGS = -Os -g -Wall

@@ -38,12 +39,12 @@ install.minimal: babeld
 	cp -f babeld $(TARGET)$(PREFIX)/bin

 install: install.minimal all
-	mkdir -p $(TARGET)$(PREFIX)/man/man8
-	cp -f babeld.man $(TARGET)$(PREFIX)/man/man8/babeld.8
+	mkdir -p $(TARGET)$(MANDIR)/man8
+	cp -f babeld.man $(TARGET)$(MANDIR)/man8/babeld.8

 uninstall:
 	-rm -f $(TARGET)$(PREFIX)/bin/babeld
-	-rm -f $(TARGET)$(PREFIX)/man/man8/babeld.8
+	-rm -f $(TARGET)$(MANDIR)/man8/babeld.8

 clean:
 	-rm -f babeld babeld.html *.o *~ core TAGS gmon.out